Process for preparing polyarylate from an ester derivative of a

Details Process for preparing polyarylate from an ester derivative of a Process for preparing polyarylate from an ester derivative of a

1989-08-03

1990-12-18

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528126, 528171, 528173, 528174, 528176, 528272, C08G 802, C08G 6300, C08G 6700

Patent

active

049787390

ABSTRACT:
An improved diester process is provided for preparing a polyarylate polymer which process comprises reacting at least one aromatic dicarboxylic acid and a diester derivative of a dihydric phenol and an ester-forming agent having no hydrogens alpha to a carbonyl group of the ester-forming agent. Polyarylates produced by the improved process of this invention have a low degree of coloration, melt stability and a low level of haze.

REFERENCES:
patent: 4297475 (1981-10-01), Nelson et al.

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